TM 9-2320-280-102-78Change 1ItemNo.IntervalCrewmemberProcedureNot Fully MissionCapable If:Table 2-2. Preventive Maintenance Checks and Services (Contd)LocationItem toCheck/ServiceDRIVER24AfterFuel FilterWARNINGDo not perform fuel system checks, inspec-tions, or maintenance while smoking or near fire, flames, or sparks. Fuel may ignite, causing damage to vehicle and injury or death to personnel.NOTEA rubber hose can be attached to drainvalve to catch fuel in containerbefore opening drain valve. If fuel is clear, putfuel back in fuel tank.a. Check fuel for contamin-a. Fuel is not clearation. With engine running,after draining 1 pintopen drainvalve. Allow fuel(0.47 L).to drain in suitable containeruntil it runs clear. Close valve.NOTEFuel retained in the drain-valve may drip when vehicle vibrations occur. This is normal and does not constitute a leak. Wipe drainvalve with rag until excess fuel is removed.b. Check for leaks.b. Class III leakage evident.c. Stop engine and removerubber hose from drainvalve,if installed.